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