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