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