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