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)(11,12)(13,14)(15,16)(17,18)(19,20)(21,22)(23,24)(25,26)(27,29)(28,31)(30,32)(9,11,14,16)(10,15,13,12)(17,18)(19,20)(21,22)(23,24)(25,27)(26,28)(29,32)(30,31)(10,13)(12,15)(18,22)(19,23)(25,28,30,29)(26,31,32,27)(1,2)(3,5)(4,6)(7,8)(9,12)(10,11)(13,16)(14,15)(17,19,21,23)(18,20,22,24)(25,29,30,28)(26,27,32,31)(1,3,4,7)(2,5,6,8)(9,13,14,10)(11,15,16,12)(17,20)(18,23)(19,22)(21,24)(25,27)(26,29)(28,32)(30,31)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.