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