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