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