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)(19,25)(20,23)(21,24)(22,27)(26,31)(28,30)(29,32)(1,3,7,4)(2,8,12,16)(5,14,6,15)(9,10,13,11)(17,19)(18,22)(20,27)(21,26)(23,25)(24,29)(28,32)(30,31)(1,4,7,3)(2,9,12,13)(5,14,6,15)(8,10,16,11)(20,28)(27,32)(1,5,7,6)(2,10,12,11)(3,14,4,15)(8,13,16,9)(19,26)(22,29)(25,31)(27,32)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.