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