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