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