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