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