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