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