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