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