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)(13,15)(14,16)(17,18)(19,24)(20,21)(22,23)(25,26,29,31)(27,28,32,30)(9,11,13,16)(10,14,15,12)(17,19)(18,20)(21,22)(23,24)(25,27,29,32)(26,30,31,28)(10,15)(12,14)(18,23)(19,21)(25,26,29,31)(27,28,32,30)(1,2)(3,5)(4,6)(7,8)(9,11)(10,14)(12,15)(13,16)(17,20,22,24)(18,19,23,21)(25,26)(27,28)(29,31)(30,32)(1,3,4,7)(2,5,6,8)(9,12,13,14)(10,11,15,16)(17,21,22,19)(18,24,23,20)(25,28)(26,27)(29,30)(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.