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