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