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