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