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