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