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)(11,15)(12,13)(14,16)(19,23)(21,24)(25,26,29,32)(27,31,28,30)(2,7)(5,8)(10,13)(14,15)(17,18,22,20)(19,21,23,24)(25,26,29,32)(27,30,28,31)(1,3,6,4)(2,5,7,8)(9,10)(11,14)(12,13)(15,16)(17,19)(18,21)(20,24)(22,23)(25,26)(27,30)(28,31)(29,32)(1,4,6,3)(2,5,7,8)(9,11,12,16)(10,14,13,15)(17,20,22,18)(19,24,23,21)(25,27,29,28)(26,30,32,31)(1,5)(2,4)(3,7)(6,8)(9,10)(11,15)(12,13)(14,16)(17,21,22,24)(18,23,20,19)(25,28,29,27)(26,31,32,30)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.