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)(15,17,19,20)(21,22,27,25)(23,30,24,28)(26,29,34,33)(31,36,32,35)(15,19)(17,20)(21,23,27,24)(22,28,25,30)(26,31,34,32)(29,35,33,36)(5,6)(7,10)(8,9)(11,12)(13,15)(14,17)(16,19)(18,20)(21,24,27,23)(22,28,25,30)(26,32,34,31)(29,35,33,36)(1,2)(3,4)(5,6)(7,10)(8,9)(11,12)(13,14)(15,17)(16,18)(19,20)(21,25,27,22)(23,30,24,28)(26,29,34,33)(31,35,32,36)(5,7,8,11)(6,10,9,12)(21,26)(22,29)(23,31)(24,32)(25,33)(27,34)(28,35)(30,36)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.