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