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