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