Styling the Sitemap XML

Hi

When infinity SEO generates a sitemap.xml file it is not styled, like 'Wordpress SEO' by yoast. By the sounds of it, it appears that xml site maps can be styled so different links are categorised so a human can read it better.

This is the message I get:

This XML file does not appear to have any style information associated with it. The document tree is shown below.

Is styling possible?

Cheers,

Johnny