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