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