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