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