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