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