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)(8,14)(11,15)(13,16)(17,18,22,23)(19,26,25,21)(20,28,29,24)(27,31,30,32)(35,41)(39,42)(43,47)(46,48)(2,6)(7,9)(8,12)(15,16)(18,23)(20,29)(21,26)(27,30)(33,34)(35,39)(36,44)(37,38)(40,45)(41,42)(43,48)(46,47) involution — undirected(3,10)(7,9)(11,13)(15,16)(18,23)(19,25)(24,28)(27,30)(34,38)(39,42)(40,44)(46,48) involution — undirected(1,3)(2,7)(4,13)(5,10)(6,9)(8,16)(11,14)(12,15)(17,19,22,25)(18,21,23,26)(20,30,29,27)(24,32,28,31)(33,34)(35,42)(36,40)(37,38)(39,41)(43,48)(44,45)(46,47)(1,4,5,14)(2,8,6,12)(3,11,10,13)(7,15,9,16)(17,20)(18,24)(19,27)(21,31)(22,29)(23,28)(25,30)(26,32)(33,35)(34,39)(36,43)(37,41)(38,42)(40,46)(44,48)(45,47)(1,2)(3,7)(4,8)(5,6)(9,10)(11,15)(12,14)(13,16)(17,21)(18,25)(19,23)(20,31)(22,26)(24,30)(27,28)(29,32)(33,36,37,45)(34,40,38,44)(35,43,41,47)(39,46,42,48)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.