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