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