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