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