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