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