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