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