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