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