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)(23,28)(24,34)(25,30)(26,32)(27,31)(29,36)(33,35)(1,2)(3,4)(5,7)(6,11)(8,16)(9,18)(10,17)(12,19)(13,20)(14,15)(21,23)(22,28)(24,30)(25,34)(26,33)(27,29)(31,36)(32,35) involution — undirected(2,4)(5,8,10,9)(6,12,14,13)(7,16,17,18)(11,19,15,20)(21,24,26,36,27,35,25,28)(22,29,30,34,31,23,32,33)(5,8,10,9)(6,13,14,12)(7,16,17,18)(11,20,15,19)(23,29)(24,35)(28,36)(33,34)(2,4)(5,9,10,8)(6,13,14,12)(7,16,17,18)(11,19,15,20)(21,25,27,26)(22,30,31,32)(23,33,29,34)(24,28,35,36)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.