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