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