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)(13,14)(15,18)(16,17)(19,20)(21,22,25,26)(23,27,29,30)(24,28,33,34)(31,35,32,36)(5,6,8,9)(7,11,12,10)(14,16)(18,19)(22,26)(23,29)(28,34)(31,32)(6,9)(10,11)(13,15,17,20)(14,18,16,19)(21,23)(22,27)(24,32)(25,29)(26,30)(28,36)(31,33)(34,35)(1,2)(3,4)(5,7)(6,10)(8,12)(9,11)(13,16,17,14)(15,18,20,19)(21,22)(23,30)(24,28)(25,26)(27,29)(31,36)(32,35)(33,34)(5,6)(7,10)(8,9)(11,12)(13,15)(14,19)(16,18)(17,20)(21,24,25,33)(22,28,26,34)(23,31,29,32)(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.