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