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