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