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