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