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