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