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