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