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