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