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