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