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