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