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