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