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