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