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