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