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