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)(35,40,38,47)(36,45,37,42)(41,46,48,44)(1,3,5,11)(2,6,8,9)(4,10,12,16)(7,13,14,15)(17,18)(19,25)(20,28)(21,23)(22,26)(24,29)(27,30)(31,32)(33,35,39,38)(34,40,43,47)(36,46,37,44)(41,45,48,42)(1,4,5,12)(2,7,8,14)(3,10,11,16)(6,13,9,15)(17,19)(18,22)(20,27)(21,26)(23,25)(24,30)(28,31)(29,32)(33,36)(34,41)(35,44)(37,39)(38,46)(40,42)(43,48)(45,47)(3,11)(6,9)(10,16)(13,15)(18,23)(19,26)(24,28)(27,32)(33,37,39,36)(34,42,43,45)(35,44,38,46)(40,41,47,48)(2,8)(6,9)(7,14)(13,15)(17,20,21,29)(18,24,23,28)(19,27,26,32)(22,30,25,31)(36,37)(41,48)(42,45)(44,46)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.