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