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