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