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