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)(17,18,23,22)(19,24,28,31)(20,25,21,26)(27,30,32,29)(2,6)(7,8)(17,19)(18,24)(20,29)(21,30)(22,31)(23,28)(25,27)(26,32) involution — undirected(1,3,5,4)(2,7,6,8)(10,13)(14,16)(17,20)(18,25)(19,27)(21,23)(22,26)(24,30)(28,32)(29,31)(1,3,5,4)(2,7,6,8)(9,11,12,15)(10,14,13,16)(18,22)(19,28)(20,25)(21,26)(27,30)(29,32)(1,4,5,3)(2,8,6,7)(17,21)(18,26)(19,27)(20,23)(22,25)(24,30)(28,32)(29,31)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.