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