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