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