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