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