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