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