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