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