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