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