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