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