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