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