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