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