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