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