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