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