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