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