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