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