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