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