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