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