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