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)(13,14,17,15)(16,19,20,18)(21,22)(23,29)(24,32)(25,31)(26,27)(28,35)(30,36)(33,34)(7,12)(10,11)(13,14,17,15)(16,19,20,18)(22,27)(25,29)(28,32)(34,36)(6,9)(10,11)(14,15)(18,19)(21,23,26,31)(22,25,27,29)(24,33,35,30)(28,34,32,36)(1,2)(3,4)(5,6)(7,10)(8,9)(11,12)(13,15,17,14)(16,19,20,18)(21,24,26,35)(22,28,27,32)(23,30,31,33)(25,36,29,34)(5,7,8,12)(6,10,9,11)(13,16)(14,18)(15,19)(17,20)(21,25)(22,23)(24,34)(26,29)(27,31)(28,33)(30,32)(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.