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