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