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