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