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