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