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