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