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