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