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