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