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