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