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)(11,16)(12,14)(13,15)(17,18)(19,22)(20,24)(21,25)(23,26)(27,29)(28,31)(30,32) involution — undirected(9,11,13,12)(10,14,15,16)(17,19)(18,22)(20,27)(21,26)(23,25)(24,29)(28,32)(30,31)(2,5)(6,7)(10,15)(14,16)(19,26)(20,28)(22,23)(24,31) involution — undirected(1,2)(3,6)(4,5)(7,8)(9,10)(11,14)(12,16)(13,15)(17,19)(18,23)(20,27)(21,26)(22,25)(24,30)(28,32)(29,31) involution — undirected(1,3)(2,6)(4,8)(5,7)(9,12,13,11)(10,16,15,14)(17,20)(18,24)(19,27)(21,28)(22,29)(23,30)(25,31)(26,32)(17,18)(19,23)(20,24)(21,25)(22,26)(27,30)(28,31)(29,32) 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.