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