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