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