Directory layout of categories

I have an e-commerce site, and my main products page, shows no products, its a starting page to help you find the right categories, or filters, you want to select to start your product search.

I am not that happy with my design though. I have broken up the filters into various categories. Created a box for each category, and labeled the filters in said box. However, I cant think of a nice way to display the filters, whilst still making it obvious they are separated.

This is what I have now

It does the job, but the filters just dont look beautiful, I want them to look attractive for users to click. Any thoughts?