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