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