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