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