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