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