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