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