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