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