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