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