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