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