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