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