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