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