How to make grid view of posts in category like this?

Hey Akhilraj,

The first step would be to create a child theme for your current theme. This would allow you to create your own look and customization without editing the base theme. Here is some info on child themes: http://codex.wordpress.org/Child_Themes.

You would then to create a template for categories. Here is some info on Category Templates: http://codex.wordpress.org/Category_Templates.

Then you would need to write a query in for the category template to display in a grid as shown.

Do you need help with the query and how to make the category display like the example you provided? This is not too hard to accomplish.