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