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