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