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