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