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