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