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