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