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