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