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)(17,18,22,25)(19,26,23,20)(21,24,30,32)(27,31,29,28)(34,39)(35,42)(41,47)(43,45)(1,3,7,12)(2,8,11,16)(4,15,9,6)(5,10,14,13)(19,23)(20,26)(27,29)(28,31)(33,34,38,39)(35,40,42,36)(37,41,46,47)(43,48,45,44)(3,12)(6,15)(8,16)(10,13)(17,19,22,23)(18,20,25,26)(21,29,30,27)(24,31,32,28)(33,35,38,42)(34,40,39,36)(37,45,46,43)(41,44,47,48)(1,4)(2,5)(3,6)(7,9)(8,13)(10,16)(11,14)(12,15)(17,18)(19,20)(21,24)(22,25)(23,26)(27,28)(29,31)(30,32)(33,36)(34,35)(37,44)(38,40)(39,42)(41,43)(45,47)(46,48) involution — undirected(1,5)(2,9)(3,13)(4,11)(6,16)(7,14)(8,15)(10,12)(17,20)(18,23)(19,25)(21,28)(22,26)(24,29)(27,32)(30,31)(33,34)(35,40)(36,42)(37,41)(38,39)(43,48)(44,45)(46,47) involution — undirected(1,6)(2,10)(3,4)(5,16)(7,15)(8,14)(9,12)(11,13)(17,21)(18,24)(19,27)(20,28)(22,30)(23,29)(25,32)(26,31)(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.