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