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