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