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