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