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