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