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)(17,18,23,27)(19,24,29,32)(20,30,28,31)(21,26,22,25)(1,3,5,4)(2,6,8,7)(9,11,14,10)(12,16,13,15)(17,19,23,29)(18,24,27,32)(20,22,28,21)(25,31,26,30)(10,11)(15,16)(17,20,21,19,23,28,22,29)(18,24,25,30,27,32,26,31)(9,12,14,13)(10,15,11,16)(17,20,22,29,23,28,21,19)(18,24,26,31,27,32,25,30)(1,4,5,3)(2,7,8,6)(9,13,14,12)(10,16,11,15)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.