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