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