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