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