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