One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,9)(4,12)(5,7)(6,11)(8,13)(10,16)(14,15)(17,18)(19,25)(20,34)(21,38)(22,41)(23,29)(24,31)(26,40)(27,37)(28,39)(30,46)(32,48)(33,47)(35,45)(36,44)(42,43) involution — undirected(4,13)(8,12)(9,16)(11,14)(17,19)(18,24)(20,35)(21,30)(22,42)(23,33)(25,38)(26,47)(27,43)(28,46)(29,45)(31,37)(32,39)(34,48)(36,40)(41,44) involution — undirected(1,3)(2,6)(4,14)(5,10)(7,15)(8,16)(9,12)(11,13)(17,19)(18,25)(20,36)(21,31)(22,32)(23,33)(24,38)(26,45)(27,46)(28,43)(29,47)(30,37)(34,44)(35,40)(39,42)(41,48) involution — undirected(2,7)(6,15)(8,12)(9,16)(17,20,22,21,23,37,39,40)(18,26,28,27,29,38,41,34)(19,30,32,35,33,36,42,31)(24,43,44,47,45,48,46,25)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.