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