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