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