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