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