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