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