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