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