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