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