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