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