Purge cache when post is updated

I just installed this plugin and I am very pleased with the increase in speed when loading pages.

However, this is a site I manage for a client and I need the cache to be cleared when they make updates, rather than having to manually click the purge cache button, if possible.

I may be simply overlooking a setting, but is there a way that I can have the cache purged when the client updates their content? They primarily use Pages and a CPT for a directory. These items do not change often, but I do want their changes to be seen when they do edit a post rather than wait for a scheduled purge.

Thank you!