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