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