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