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