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)(11,13)(12,14)(15,16)(17,18,19,24,21,26,22,23)(20,28,27,31,29,25,30,32)(1,3,5,8)(2,6,4,7)(9,10)(11,15)(12,14)(13,16)(17,19,21,22)(18,23,26,24)(20,27,29,30)(25,31,28,32)(1,2,5,4)(3,6,8,7)(9,11)(10,13)(12,16)(14,15)(18,24)(19,22)(20,29)(23,26)(25,31)(28,32)(1,4,5,2)(3,6,8,7)(11,16)(13,15)(17,20)(18,25)(19,27)(21,29)(22,30)(23,31)(24,32)(26,28)(10,14)(13,15)(18,26)(20,29)(23,24)(27,30) 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.