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