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