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