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