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