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