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