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