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