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