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