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)(19,26)(20,28)(21,24)(22,23)(25,30)(27,31)(29,32)(33,34,38,36)(35,39,41,42)(37,40,46,44)(43,47,45,48)(1,3)(2,7)(4,12)(5,13)(6,11)(8,15)(9,16)(10,14)(17,19,23,21)(18,24,22,26)(20,27,30,29)(25,31,28,32)(35,41)(39,42)(43,45)(47,48)(2,8)(3,11)(9,13)(10,12)(17,20,23,30)(18,25,22,28)(19,27,21,29)(24,31,26,32)(33,35)(34,39)(36,42)(37,43)(38,41)(40,47)(44,48)(45,46)(1,3)(2,7)(4,12)(5,13)(6,11)(8,15)(9,16)(10,14)(17,20)(18,25)(19,27)(21,29)(22,28)(23,30)(24,31)(26,32)(33,36,38,34)(35,42,41,39)(37,44,46,40)(43,48,45,47)(1,4)(2,9)(3,12)(5,15)(6,14)(7,16)(8,13)(10,11)(17,21,23,19)(18,24,22,26)(20,29,30,27)(25,31,28,32)(33,35)(34,39)(36,42)(37,45)(38,41)(40,48)(43,46)(44,47)(1,5,6,16)(2,10,8,12)(3,13,11,9)(4,7,14,15)(17,22,23,18)(19,26,21,24)(20,28,30,25)(27,32,29,31)(33,37)(34,40)(35,43)(36,44)(38,46)(39,47)(41,45)(42,48)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.