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