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