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