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