One vertex per element, one color per generator, with an edge from x to x·s.
(5,6,10,15,11,16,12,17)(7,18,21,32,22,31,28,13)(8,23,25,33,26,14,9,27)(19,34,24,36,20,30,35,29)(1,2)(3,4)(5,7,12,21,11,22,10,28)(6,13,17,18,16,32,15,31)(8,24,9,20,26,35,25,19)(14,30,33,29,23,34,27,36)(2,4)(5,8,10,25,11,26,12,9)(6,14,15,27,16,23,17,33)(7,19,21,24,22,20,28,35)(13,29,18,34,32,36,31,30)(5,9,12,26,11,25,10,8)(6,14,15,27,16,23,17,33)(7,20,21,35,22,19,28,24)(13,30,31,36,32,34,18,29)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.