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