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