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