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