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