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