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