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