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