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