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