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