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