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