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