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