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