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