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