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