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)(19,24)(20,33)(21,26)(22,36)(23,28)(25,34)(27,37)(29,44)(30,39)(31,47)(32,41)(35,43)(38,45)(40,48)(42,46) involution — undirected(1,3)(2,5)(4,8)(6,7)(9,10)(11,15)(12,16)(13,14)(17,19,23,32)(18,24,28,41)(20,30,21,29)(22,31,37,48)(25,42,43,38)(26,44,33,39)(27,40,36,47)(34,46,35,45)(10,14)(15,16)(17,20,23,21)(18,25,28,43)(19,29,32,30)(22,35,37,34)(24,38,41,42)(26,36,33,27)(31,46,48,45)(39,47,44,40)(2,6)(5,7)(9,11,13,12)(10,15,14,16)(17,21,23,20)(18,26,28,33)(19,30,32,29)(22,35,37,34)(24,39,41,44)(25,36,43,27)(31,46,48,45)(38,47,42,40)(3,8)(5,7)(9,12,13,11)(10,15,14,16)(20,21)(25,43)(26,33)(29,30)(34,35)(38,42)(39,44)(45,46)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.