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