The pages you "like" on Facebook are all aggregated onto your JSwipe profile. For example, see the Facebook page for Drake here: https://www.facebook.com/Drake/?fref=ts.
You can see Drake is listed as a Musician/Band, meaning if you were to like this page on Facebook, Drake would be listed under the "Music" category on your JSwipe profile.
The last page on Facebook that you have liked will show up first under the respective categories. To clarify, if you like Drake on Facebook now, he will show up first under your music category. You cannot manually switch the order of these likes.
To update likes from Facebook open JSwipe Settings Profile Edit Update Interests From Facebook.