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