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