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