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