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