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