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