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