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