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