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