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