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