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