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