One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,7)(4,5)(6,8)(9,10,13,15)(11,12,16,14)(17,18)(19,23)(20,24)(21,25)(22,26)(27,29)(28,30)(31,32)(1,3,6,4)(2,7,8,5)(9,11)(10,14)(12,15)(13,16)(17,19,22,29)(18,23,26,27)(20,25,30,32)(21,28,31,24)(1,4,6,3)(2,7,8,5)(9,12,13,14)(10,11,15,16)(17,18,22,26)(19,27,29,23)(20,24,30,28)(21,25,31,32)(1,5,6,7)(2,4,8,3)(9,11)(10,12)(13,16)(14,15)(17,18)(19,23)(20,24)(21,25)(22,26)(27,29)(28,30)(31,32)(17,20)(18,24)(19,25)(21,23)(22,30)(26,28)(27,31)(29,32) involution — undirected(17,21)(18,25)(19,28)(20,27)(22,31)(23,30)(24,29)(26,32) involution — undirectedA 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.