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