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