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