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