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