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