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