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