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