Yes - but only when you Export as PDF, and then import it into either Sketch or Adobe Illustrator.
In the near future, we're working on online editing capabilities which will allow you to 'fork' a sitemap and totally redesign new optimized versions based on the original crawled map.
Here's a sneak peak :
P.S. if you restructure or collapse any node, then Export as PDF, that new structure will show up in the pdf ;-)