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