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