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