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