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