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