One vertex per element, one color per generator, with an edge from x to x·s.
(2,5)(6,8)(9,10,12,14)(11,13,15,16)(18,22)(19,25)(20,28)(23,27)(26,30)(31,32)(1,2)(3,6)(4,5)(7,8)(9,11,12,15)(10,13,14,16)(17,18,21,22)(19,25,27,23)(20,29,28,24)(26,30,32,31)(1,3,4,7)(2,6,5,8)(11,15)(13,16)(17,19,18,23,21,27,22,25)(20,26,24,30,28,32,29,31)(2,5)(6,8)(17,20,22,29,21,28,18,24)(19,26,25,31,27,32,23,30)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.