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