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