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