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)(13,14,19,20)(15,16,17,18)(21,22,26,31)(23,28,32,27)(24,33,35,29)(25,34,36,30)(6,9)(7,12)(13,15)(14,18)(16,20)(17,19)(21,23,26,32)(22,27,31,28)(24,30,35,34)(25,33,36,29)(5,6,8,9)(7,10,12,11)(13,16,19,18)(14,15,20,17)(21,23)(22,28)(24,34)(25,29)(26,32)(27,31)(30,35)(33,36)(1,2,3,4)(5,6)(7,10)(8,9)(11,12)(13,17,19,15)(14,16,20,18)(21,24,26,35)(22,29,31,33)(23,30,32,34)(25,28,36,27)(5,7,8,12)(6,10,9,11)(13,18,19,16)(14,15,20,17)(21,25,26,36)(22,30,31,34)(23,29,32,33)(24,28,35,27)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.