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