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