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