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