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