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