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