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