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