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