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