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