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