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