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