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