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