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