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