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