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