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