hello aspirant

you have got a good percentage in your diploma.Since you have completed diploma,you may have gained some knowledge about the subject.If  you focus on the entrance exams like JEE advanced, JEE Main you may get into the top colleges in Maharashtra.

Here is a link for top colleges in Maharashtra  for Computer Science Engineering.you may refer this link for more information.

https://engineering.careers360.com/colleges/list-of-computer-science-engineering-colleges-in-maharashtra

good luck!