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