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