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