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