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