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