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