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