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