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