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