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