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