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