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