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