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