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