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