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