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