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