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