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