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