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