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