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