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