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