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