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