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