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