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