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