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