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