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