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