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