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