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