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