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