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