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