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