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