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