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