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