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