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