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