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