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