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