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