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