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)(21,22,27,25,26,29,24,30)(23,31,33,34,32,28,35,36)(5,7,10,17)(6,11,14,15)(8,16,9,18)(12,19,13,20)(21,23,26,32)(22,28,29,31)(24,35,27,33)(25,36,30,34)(1,2,3,4)(5,8,10,9)(6,12,14,13)(7,16,17,18)(11,19,15,20)(22,29)(23,32)(25,30)(33,35)(5,9,10,8)(6,13,14,12)(7,16,17,18)(11,19,15,20)(21,24,26,27)(22,30,29,25)(23,33,32,35)(28,36,31,34)(6,14)(11,15)(12,13)(19,20)(21,25,27,29,26,30,24,22)(23,34,33,28,32,36,35,31)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.