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