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