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