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