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