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