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