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