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