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