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