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