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