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