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