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