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