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