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