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