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