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