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