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