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