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