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