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