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