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