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