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