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