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