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