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