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