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