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