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)(15,18)(16,20)(21,22)(23,29)(24,28)(25,30)(26,27)(31,32)(33,35)(34,36)(5,7)(6,10)(8,11)(9,12)(13,14,17,19)(15,16,18,20)(22,27)(23,30)(28,35)(31,36)(1,2,3,4)(5,7)(6,10)(8,11)(9,12)(13,15,17,18)(14,16,19,20)(21,23)(22,25)(24,31)(26,30)(27,29)(28,34)(32,35)(33,36)(5,7)(6,11)(8,10)(9,12)(13,16)(14,18)(15,19)(17,20)(21,24)(22,28)(23,31)(25,34)(26,33)(27,35)(29,32)(30,36) involution — undirected(5,8,9,6)(7,11,12,10)(21,25)(22,23)(24,32)(26,29)(27,30)(28,36)(31,35)(33,34)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.