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