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