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