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