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