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