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