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