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)(15,19)(16,18)(17,20)(21,22,25,28)(23,29,31,26)(24,27,33,36)(30,35,32,34)(5,7,10,8)(6,9,12,11)(13,14,16,18)(15,19,20,17)(21,23,25,31)(22,26,28,29)(24,32,33,30)(27,35,36,34)(5,7,10,8)(6,11,12,9)(13,14)(15,17)(16,18)(19,20)(21,22)(23,26)(24,27)(25,28)(29,31)(30,34)(32,35)(33,36)(1,2,3,4)(5,8,10,7)(6,9,12,11)(21,23)(22,26)(24,30)(25,31)(27,34)(28,29)(32,33)(35,36)(5,9)(6,7)(8,12)(10,11)(13,15)(14,17)(16,20)(18,19)(21,24,25,33)(22,27,28,36)(23,30,31,32)(26,34,29,35)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.