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