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)(17,18,24,19)(20,28,31,29)(21,23,26,22)(25,32,27,30)(1,3,5,10,6,2,7,9)(4,8,13,12,14,11,15,16)(17,19,22,21,24,18,23,26)(20,25,30,28,31,27,32,29)(1,2)(3,6)(4,8)(5,9)(7,10)(11,14)(12,13)(15,16)(17,20,24,31)(18,25,19,27)(21,29,26,28)(22,30,23,32)(1,4,5,13,6,14,7,15)(2,8,9,12,3,11,10,16)(17,21,22,18,24,26,23,19)(20,29,30,25,31,28,32,27)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.