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