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