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