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