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