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