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