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