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