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