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