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