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