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