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