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