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