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