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