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