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