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