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