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