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)(11,14)(12,16)(13,15)(17,18,24,28,23,19,22,26)(20,27,29,32,21,25,30,31)(9,11,13,12)(10,14,15,16)(17,19,23,18)(20,25,21,27)(22,26,24,28)(29,32,30,31)(2,5)(6,8)(10,15)(11,12)(17,20,23,21)(18,25,19,27)(22,30,24,29)(26,32,28,31)(1,3,4,7)(2,6,5,8)(9,12,13,11)(10,16,15,14)(17,21,23,20)(18,25,19,27)(22,29,24,30)(26,32,28,31)(11,12)(14,16)(17,22,23,24)(18,26,19,28)(20,29,21,30)(25,31,27,32)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.