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