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