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