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