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