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