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