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