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