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