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