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