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