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