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