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