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