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