One vertex per element, one color per generator, with an edge from x to x·s.
(2,6)(4,7)(10,13)(11,15)(17,18,20,22)(19,21,23,24)(25,26,29,31)(27,30,28,32)(1,2)(3,7)(4,8)(5,6)(9,10)(11,14)(12,13)(15,16)(19,23)(21,24)(25,27,29,28)(26,30,31,32)(1,3,5,8)(2,7,6,4)(17,19,20,23)(18,21,22,24)(25,28,29,27)(26,30,31,32)(1,2)(3,7)(4,8)(5,6)(17,18)(19,21)(20,22)(23,24)(25,26)(27,32)(28,30)(29,31) involution — undirected(1,4,5,7)(2,8,6,3)(9,11,12,15)(10,14,13,16)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.