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