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