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