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