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