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