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