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