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