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)(21,22,25,27)(23,29,31,36)(24,33,30,28)(26,34,35,32)(5,7)(6,10)(8,14)(9,13)(11,17)(12,16)(15,19)(18,20)(21,23,30,34,25,31,24,32)(22,26,33,36,27,35,28,29)(1,2,3,4)(7,13)(8,15)(10,16)(11,18)(22,27)(23,31)(28,33)(32,34)(5,8,9,15)(6,11,12,18)(7,14,13,19)(10,17,16,20)(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.