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