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