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