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