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