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