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