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