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