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