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