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