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