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