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