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