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