Sarayu started her career by doing minor roles in movies like Chakkara Muthu and Veruthe Oru Bharya. Her debut movie in a lead role was Kappal Muthalaali directed by Thaha. Her next movie was Chekavar, in which she played the protagonist Gauri. She paired with Bala in Sahasram, and in Four Friends with Kunjakko boban. She played a negative character in Four Friends. She also appeared in Kanyakumari Expressby TS Sureshbabu and Inganeyum Oraal. Karayilekku Oru Kadal Dooram was the movie in which she acted as Indrajith's wife. She did a guest appearance in Orkut Oru Ormakoot with Siddique. In Janapriyan alongside Jayasurya, Bhama and Manoj K Jayan, she played the role of Revathi which was a notable character. In Nadakame Ulakam, directed by Viji Thampi, she acted with Mukesh. She did a major role in Nidra, a directional venture of Sidharth Bharathan. She has worked in Husbands in Goa, alongside Asif Ali, Jayasurya and Indrajith, in which she appeared as a sly seductive girl, out for trapping men. She received many criticisms, both positive and negative, for this role. She had a guest role in Housefull, directed by Linson Antony. Meanwhile, she also stepped into Tamil through a movie directed by cameraman Madhu Ambatt, the shooting of which is in progress.

Recently she directed a short film, Pacha, which has the voice by actress Bhama. There are songs in the film, and a poem sung by the actress Ananya.

Sarayu was born at Cherupuzha (Kannur) to late Mohan and Chandrika as their only child. Her father was from Chottanikkara, a temple town in Ernakulam district and her mother is from Kannur Dist; the family settled at Chottanikkara. She had her schooling from Our Lady Convent School, Thoppumpady, Ernakulam until fourth grade, at GVHSS Ernakulam from fifth until plus two. She did her graduation on BA Literature at Maharajas College, Ernakulam. She is currently doing her postgraduate degree in Literature from Annamalai University. She is also a dancer and is based in Kalabhavan, Ernakulam. She was very active in NCC while at school.^[5]

Sarayu married Sanal V. Devan on 12 November 2016.^[1]

as judge

• Let's Dance (Amrita TV)
• Vanitharatnam (Amrita TV)
• Comedy Stars (Asianet)
• Yuvatharam (Jaihind TV)
• Laughing Villa Season (Surya TV)

As Contestant

• Star War (Surya TV)

She has also directed, produced and acted, in her own short film, Pachha, meaning "green" in Malayalam. It is a movie highlighting the importance of flora species in our environment, and about her love for the color. Ananya has recorded a song of the same title for the movie. The song also happens to be written by Sarayu.

She published a book titled Njyayaraazhchakale Snehicha Penkutty, meaning "Girl Who Loved Sundays", which contains her own collection of poems and stories.

She has acted in few advertisements.

She has performed in many stage shows in various countries.

Before entering into the film field she anchored some television programmes.

She is associating with a group named "Disha" which does charitable activities.