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