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