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