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)(17,18,23,26)(19,21,24,29)(20,22,25,31)(27,28,30,32)(33,34,40,42)(35,36,38,39)(37,41,46,48)(43,44,45,47)(2,7)(3,12)(4,10)(14,15)(17,19,23,24)(18,21,26,29)(20,27,25,30)(22,28,31,32)(33,35)(34,36)(37,45)(38,40)(39,42)(41,47)(43,46)(44,48)(2,7)(4,10)(8,11)(13,16)(19,24)(21,29)(27,30)(28,32)(33,36,40,39)(34,35,42,38)(37,44,46,47)(41,43,48,45)(1,3,6,12)(2,8,7,11)(4,13,10,16)(5,15,9,14)(17,20)(18,22)(19,27)(21,28)(23,25)(24,30)(26,31)(29,32)(33,37)(34,41)(35,43)(36,44)(38,45)(39,47)(40,46)(42,48)(1,4,6,10)(2,9,7,5)(3,13,12,16)(8,14,11,15)(17,21,23,29)(18,24,26,19)(20,28,25,32)(22,30,31,27)(33,38,40,35)(34,36,42,39)(37,45,46,43)(41,44,48,47)(1,5,6,9)(2,10,7,4)(3,14,12,15)(8,13,11,16)(17,22)(18,25)(19,28)(20,26)(21,30)(23,31)(24,32)(27,29)(33,39,40,36)(34,35,42,38)(37,44,46,47)(41,45,48,43)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.