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