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