One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,6)(3,7,8,5)(9,10)(11,16)(12,14)(13,15)(17,18,21,24)(19,25,27,23)(20,22,30,31)(26,28,29,32)(1,3,4,8)(2,5,6,7)(11,12)(14,16)(17,19,21,27)(18,23,24,25)(20,29,30,26)(22,28,31,32)(9,11,13,12)(10,14,15,16)(17,20,22,24,21,30,31,18)(19,26,28,23,27,29,32,25)(9,12,13,11)(10,14,15,16)(19,27)(23,25)(26,29)(28,32)(10,15)(14,16)(18,24)(19,27)(20,30)(28,32) 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.