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