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